Geographic Range

Nasua nasua is found in tropical regions of South America, from Colombia and Venezuela to Uruguay, northern parts of Argentina, and into Ecuador. On the eastern and western slopes of the Andes Mountains they are found up to 2500 meters.

Physical Description

Coati upper parts are dark brown, gray, or dark or brightly rust colored. The underparts are white. The head is narrow with the nose slightly turned upward and elongated, and is very flexible, allowing coaties to search out food under leaf litter and overturned debris. The muzzle is brown with pale spots above, below, and behind the eye. The ears are small and fringed with white on the inside rims. The long tails of coatis are used for balance, and are black to brown with yellow rings. Coatis have thick, dull fur. The young are not as darkly colored as adults. Adults measure 41 to 67 cm from head to the base of the tail, with the tail adding an additional 32 to 69 cm to their length. These animals are about 30 cm tall at the shoulder, and weigh between 3 and 6 kg. Coatis have strong claws and forelimbs to climb and dig out food from under rotted logs. They can reverse the joints of the anklebone to descend trees headfirst. (Marwell Zoological Park, 1996; Emmons, 1997; Kalasinkas, 1999)

Development

See Reproduction.

Reproduction

Typically, one male is accepted into a band of females and juveniles near the beginning of the breeding season. The mating system is polygynous, with that male mating the females in the band. (Nowak, 1991)

Breeding season for coatis varies with location, and corresponds with the maximum availability of fruit. Occurs between January and March in some locations, and between October and February in others. Males will join the losely organized bands of females to mate. After mating, males leave the bands for a mainly solitary existence, and the females disperse and build tree nests for the remainder of gestation and parturation. Females give birth to litters of 3 to 7 young 74 to 77 days after mating. Most births occur between April and June Five to six weeks after birth, the females and their young will rejoin the band. (Marwell Zoological Park 1996, Emmons, 1997; Gompper, 1998; Kasalinkas, 1999; Nowak, 1991)

Young are altricial. Neonates weigh 78 g at 5 days. Eyes open at 10 days. Young coatis are able to stand at 19 days. By 24 days of age, coatis are able to walk and to focus their eyes. Young can climb at 26 days, and eat solid food at 4 months. Females become sexually mature at 2 years of age, and male mature sexually around three years of age. (Marwell Zoological Park, 1996; Gompper, 1998; Kalasinkas, 1999)

Females care for the altricial young in isolated tree nests until they are able to walk and climb, at which time they rejoin the social group. Mothers continue to nurse the young until they are weaned around 4 months of age. (Nowak, 1991)

Behavior

Males are normally philopatric whereas the females disperse. Unrelated females and their young form bands with up to 30 individuals. Coatis are good climbers and swim well. They are diurnal and spend most of the day hunting for food. Although coatis are mostly terrestrial, they do sleep, mate, and give birth in trees. When disturbed, they descend from the tree and escape on the ground. Coatis have been known to enter human habitations to rummage through garbage. They typically do not prefer to move up or down a tree, but rather climb out to the end of a branch and jump to a new branch that is still on the same tree. (Emmons, 1997; Gompper, 1998; Kasalinkas, 1999)

Ecosystem Roles

Coatis help to control pest populations through their foraging behavior. They provide food to predators, and are likely important in dispersing some seeds.

Economic Importance for Humans: Positive

Hunted by local populations for food, coatis are also vital in helping control populations of insects. There is a small demand for these animals in the live pet trade. (Marwell Zoological Park, 1996; Emmons, 1997; Gompper, 1998)

Other Comments

Experiments on captive coatis indicate cognitive skills of shape differentiation and shape recognition. Initially, confusion over solitary males led to designation of a separate species. Other common names are the ring-tailed coati, the brown-nosed coati, the southern coati, and the South American coati. Coatis are also referred to in some texts as coatimundis. The name coati or coatimundi is Tupian Indian in origin. The prefix "coati" means “belt”, and "Tim" means “nose” referring to the way the coatis tuck their noses under their bellies to sleep. The name Nasua is Latin for “nose”, possibly for the same reason. (Marwell Zoological Park, 1996; Emmons, 1997; Gompper, 1998)

Contributors

Glossary

Neotropical

living in the southern part of the New World. In other words, Central and South America.

altricial

young are born in a relatively underdeveloped state; they are unable to feed or care for themselves or locomote independently for a period of time after birth/hatching. In birds, naked and helpless after hatching.

bilateral symmetry

having body symmetry such that the animal can be divided in one plane into two mirror-image halves. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. Synapomorphy of the Bilateria.

carrion

flesh of dead animals.

chemical

uses smells or other chemicals to communicate

ecotourism

humans benefit economically by promoting tourism that focuses on the appreciation of natural areas or animals. Ecotourism implies that there are existing programs that profit from the appreciation of natural areas or animals.

endothermic

animals that use metabolically generated heat to regulate body temperature independently of ambient temperature. Endothermy is a synapomorphy of the Mammalia, although it may have arisen in a (now extinct) synapsid ancestor; the fossil record does not distinguish these possibilities. Convergent in birds.

fertilization

union of egg and spermatozoan

food

A substance that provides both nutrients and energy to a living thing.

forest

forest biomes are dominated by trees, otherwise forest biomes can vary widely in amount of precipitation and seasonality.

iteroparous

offspring are produced in more than one group (litters, clutches, etc.) and across multiple seasons (or other periods hospitable to reproduction). Iteroparous animals must, by definition, survive over multiple seasons (or periodic condition changes).

motile

having the capacity to move from one place to another.

mountains

This terrestrial biome includes summits of high mountains, either without vegetation or covered by low, tundra-like vegetation.

native range

the area in which the animal is naturally found, the region in which it is endemic.

omnivore

an animal that mainly eats all kinds of things, including plants and animals

pet trade

the business of buying and selling animals for people to keep in their homes as pets.

polygynous

having more than one female as a mate at one time

rainforest

rainforests, both temperate and tropical, are dominated by trees often forming a closed canopy with little light reaching the ground. Epiphytes and climbing plants are also abundant. Precipitation is typically not limiting, but may be somewhat seasonal.

scrub forest

scrub forests develop in areas that experience dry seasons.

seasonal breeding

breeding is confined to a particular season

sexual

reproduction that includes combining the genetic contribution of two individuals, a male and a female

social

associates with others of its species; forms social groups.

solitary

lives alone

tactile

uses touch to communicate

temperate

that region of the Earth between 23.5 degrees North and 60 degrees North (between the Tropic of Cancer and the Arctic Circle) and between 23.5 degrees South and 60 degrees South (between the Tropic of Capricorn and the Antarctic Circle).

terrestrial

Living on the ground.

territorial

defends an area within the home range, occupied by a single animals or group of animals of the same species and held through overt defense, display, or advertisement

tropical

the region of the earth that surrounds the equator, from 23.5 degrees north to 23.5 degrees south.

viviparous

reproduction in which fertilization and development take place within the female body and the developing embryo derives nourishment from the female.

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The Animal Diversity Web is an educational resource written largely by and for college students. ADW doesn't cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Though we edit our accounts for accuracy, we cannot guarantee all information in those accounts. While ADW staff and contributors provide references to books and websites that we believe are reputable, we cannot necessarily endorse the contents of references beyond our control.

This material is based upon work supported by the
National Science Foundation
Grants DRL 0089283, DRL 0628151, DUE 0633095, DRL 0918590, and DUE 1122742. Additional support has come from the Marisla Foundation, UM College of Literature, Science, and the Arts, Museum of Zoology, and Information and Technology Services.